Built for heavy-duty industrial applications, the Siemens QJ22B070H is a 2-pole, 70A molded case circuit breaker. It delivers robust thermal-magnetic protection with fixed long-time and instantaneous (LI) trip functions to prevent electrical damage. This QJ2H-type breaker features a unit-mount design, allowing seamless integration into Siemens P1, P2, and P3 panelboards, as well as switchboards. With a high 42kAIC rating at 240VAC, it includes a trip-free mechanism and is fully HACR rated.
What panelboards are compatible with the Siemens QJ22B070H?
The QJ22B070H is a unit-mount, bolt-on breaker designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and meter centers.
What does the H in the QJ22B070H catalog number signify?
The H indicates that this is a high-interrupting capacity breaker, specifically a Type QJ2H. It features an interrupting rating of 42kAIC at 240VAC, which is significantly higher than standard QJ2 breakers.
What wire sizes are accepted by the lugs on the QJ22B070H?
The load-side lugs on this breaker accept 6 AWG to 300 kcmil copper (Cu) wire, or 4 AWG to 300 kcmil aluminum (Al) wire.
How does the QJ22B070H mount into the electrical panel?
This is a unit-mount, bolt-on circuit breaker. It secures directly to the panelboard bus using bolted connections rather than a plug-on mechanism, ensuring a secure connection for industrial and commercial applications.
What type of trip unit is installed in the QJ22B070H?
This breaker features a non-interchangeable thermal-magnetic trip unit. It provides fixed long-time protection against sustained overloads and fixed instantaneous protection against short circuits.
Can the Siemens QJ22B070H replace older ITE or Gould breakers?
Yes. Siemens acquired the ITE and Gould circuit breaker lines. The Siemens QJ22B070H is the direct replacement for older ITE or Gould QJ2H breakers with the same 70A, 2-pole, 240V, and 42kAIC specifications.
Can this 2-pole breaker be used on a 3-phase system?
Yes, a 2-pole breaker like the QJ22B070H can be installed in a 3-phase panelboard to feed a single-phase 240V load, provided the panelboard accepts QJ frame bolt-on breakers.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 10 reviews.
Siemens QJ23B125 - 125A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/11/26
Breaker
Perfect
TN
Timothy N.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/27/26
10% off
Arrived on time, worked when turned on
WK
Willie K.
Verified Buyer
Reviewing
Siemens QJ23B150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
7/22/26
Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
PG
Phil G.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/3/26
Great Service
I was in a bind for this breaker that was for an elevator, and Nick got me all the components even though their blizzard! Will use them for all my specialty breakers.
VC
Vladimir C.
Verified Buyer
Reviewing
Siemens QJ22B200 - 200A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
12/10/25
4 start
The breaker was it perfect match.,but it was missing the two top bolts.